Two blocks are hung by a string draped over a pulley, a \(1.0-\mathrm{kg}\) block on the left and a \(3.0-\mathrm{kg}\) block on the right. The two blocks start out at rest and at the same height.

(a) What is the change in the gravitational potential energy of the system of blocks and Earth when the 3. 0\(\mathrm{kg}\) block has dropped \(0.53 \mathrm{~m}\) ?

(b) What is the change in the kinetic energy of the system between release and this instant?

(c) What is the velocity of the \(1.0-\mathrm{kg}\) block at this instant?